Final answer:
Sodium and potassium are involved in co-transport, and glucose enters the cell by facilitated diffusion. There is no information provided about nucleotide transport.
Step-by-step explanation:
The question pertains to the mechanisms of substance transport across cell membranes. Based on the provided information, sodium and potassium are involved in a co-transport system, where sodium is actively exchanged for potassium using ATP on the basal membrane. Glucose molecules, on the other hand, enter the cell through facilitated diffusion, moving down their concentration gradient through carrier protein channels in the membrane without requiring energy. As for nucleotides, there is no information given in the figure about their mode of transport; therefore, we cannot confirm if nucleotides enter the cell by facilitated diffusion.